Unfortunately, it's been customary for manufacturers to have a specific time period for 'adjustments' to be made under warranty or at 'no charge'. In my experience, 'adjustments' have been a covered item during the first 12 months or 12K miles, whichever comes first, even though your basic warranty might be 3/36.
However, since the smarts basic warranty is only 2/24, their 'adjustment' period may be much shorter, say 6 months or 6K miles. Only speculating.
Sorry, I don't have my owners manual and warranty book handy, but maybe you should check and see if the manual specifically mentions the words 'adjustments'.
If you find nothing, then I would ask the Service Manager at your smart center to show you in your warranty coverage where 'such items are not covered'.
